I went for a ride with my club today. One lady in the ride had an older Domane+. She is in her 70s and wants to ride with the people she's always ridden with, but she can't maintain 18-20 mph. (neither can I, and I'm 46!) So that was her solution. She said she can go 115 miles on a charge, but she only weighs 100 lbs. We were on a 14-16 mph ride, so I asked her if on a ride like this, she turns off the electric, she said no, because it weighs 44 lbs and is too heavy for her to pedal like a regular bike. Therefore, she's going to sell it and replace it with a newer one, which weighs only 25 lbs, and that will let her ride it normally.
Since she's only 100 lbs, losing 20 lbs. off the bike is quite noticeable to her. I'm 183, so it wouldn't be as noticeable to me.
I would LOVE to have a Domane+ to flatten out those hills on a century ride, but it's not in the budget any time soon.
Also, I just noticed the lower models of them have hub motors! (I expected mid drive for the multi-thousand dollar price...)